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Posted March 27, 2026Back to blogs
Written by: Jenn Fernandez
Making the right nutritional choices during the preconception journey can feel overwhelming and confusing. With so much advice out there, it can be hard to know what to eat, and what not to eat, for your reproductive health.
On top of that, nutrition isn’t just about what you eat: it also involves smart supplementation. Understanding which supplements to take is another part of the preconception puzzle.
That’s why we created this guide to give you actionable tips you and your partner can apply on a daily basis. Backed by research and dietitian expertise, we walk you through the “plate method”: a simple, science-backed framework for addressing nutritional needs for both partners during preconception. Plus, you’ll learn how a daily Kaneka Ubiquinol® supplement complements a healthy diet and promotes cellular energy and antioxidant protection — both key to reproductive health.
Read More: See Our Comprehensive Preconception Guide
A healthy diet impacts nearly every aspect of overall wellness, including your reproductive health. Nutrient-dense meals support hormone production, egg quality, and sperm health. But, to understand the connection, we need to look within your cells.
Food is fuel for our bodies and helps us do the activities we love. Within our cells are mitochondria, which help to power cellular processes and produce cellular energy. This energy production creates byproducts — molecules seeking electrons from other molecules.1,2 Mitochondria are the greatest source of free radicals in the body, making them a site for free radical buildup.
So what does this mean for reproductive health? Healthy cells are essential for both male and female preconception.3 Not only do oocytes (or unfertilized female eggs) contain the greatest number of mitochondria in any cell because of their energy demand, but one player is essential for neutralizing free radicals and preventing cellular damage: antioxidants.4
Antioxidants from food and supplement sources protect cells (including reproductive cells), starting within the mitochondria. If free radicals outnumber antioxidants, “oxidative stress” can occur, potentially affecting mitochondrial function and the health of reproductive cells.5
Kaneka Ubiquinol® is the active antioxidant form of CoQ10 and a powerful antioxidant. It helps neutralize free radicals and complements a balanced diet to address nutritional needs during the preconception phase and everyday life. Below, we dive into the components of a healthy preconception diet packed with nutrients and antioxidants.
Read More: Learn More About Antioxidants and Reproductive Health
At the foundation of a balanced diet are three essential macronutrients: protein, carbohydrates, and healthy fats:
These macronutrients are so important to preconception because of their role in helping balance hormones. Adequate protein, healthy fats, and balanced carbohydrate intake help hormones function throughout the body and support reproductive processes. These three macronutrients are not the entire picture of preconception nutrition, but keeping them in mind can help you balance your plate on your preconception journey.
Read More: Get Tips On Promoting Sperm Quality
Prioritizing your nutrition during preconception is simple with the “plate method”: a visual guide to building meals that fuel your body. At your next meal, aim for this breakdown:
Why does this approach work? It helps balance blood sugar, supports hormone production, and provides essential nutrients. You can adapt this approach to different diet styles such as Mediterranean, plant-based, Whole30, and more. Recommended dietary needs vary from person to person, so it’s best to consult a healthcare professional before making drastic changes to your diet.
Protein is key to general healthy nutrition for all adults. Yet, those on their preconception journey can address their nutritional needs by focusing on protein sources like:
These protein sources provide specific nutrients that are especially key to preconception health, like zinc, selenium, B vitamins, and iron (to name a few). Plus, research shows that men and women who consume at least two servings per day of low-mercury fatty fish (tuna, salmon, or shrimp), plant-based proteins (soy, lentils, beans), and seeds and nuts experienced positive effects on their reproductive health. Remember: not all proteins are the same, so it’s best to limit processed meats and opt for sustainable protein sources.
Don’t be fooled by the myth that “carbs are bad”: they’re key to balanced nutrition and preconception health. Just be sure you’re focusing on whole, unprocessed carbs like quinoa, sweet potatoes, oats, brown rice, farro, legumes, and ancient grains. These keep your blood sugar and hormones balanced, both factors in reproductive health.
Healthy fats — like those found in fish, nuts, olive oil, and avocados — play a significant role in preconception health, too. They can support egg quality, hormone regulation, and healthy cellular processes.
Not all fats support your general wellness or reproductive health, though. Be sure to limit trans fats and saturated fats as you build your plate. Remember: it’s not just about eating eggs or chia seeds every so often, but rather eating healthy fats consistently. Plus, when you try to increase your fatty fish and plant-based protein intake, you often decrease the number of red or processed meat meals you eat per week.
What you eat matters for reproductive health, but so does when you eat. Meal timing can impact hormone balance, blood sugar, and cortisol — all of which are essential for supporting your body during preconception. Eating every few hours helps maintain stable blood sugar levels, which is especially important for women preparing for conception. Skipping breakfast and strict intermittent fasting can throw off your hormonal balance, as your body needs that morning fuel to regulate reproductive hormones properly.
Your body operates on an internal clock called your circadian rhythm, and this doesn’t just control when you feel sleepy. It also influences your metabolism and preconception health, as research shows that poor sleep can negatively impact fertility.6 When your eating patterns align with your natural circadian rhythm, your body can better regulate the hormones that support reproductive health.
On the other hand, eating too close to bedtime can disrupt sleep quality. Good sleep hygiene is important for reproductive health, too, and establishing consistent meal times each day helps your body develop a predictable rhythm for hormone regulation.
While these might feel like insignificant factors in the grand scheme of things, remember that even small adjustments can make a meaningful difference.
Read More: Our Guide for Couples Preparing for Preconception
Now that we’ve explained the plate method, it’s time to put it into action. Below is just one example of how you can plan your meals today to support preconception wellness:
In this plan, each meal hits the macronutrient ratios and includes foods with antioxidants. You can get creative and flexible with these, too, depending on your preferences and dietary needs. Eating well doesn’t have to mean skipping your favorite treats. It just means being mindful of what you eat on a regular basis, one day at a time.
Read More: Explore How Kaneka Ubiquinol® Supports Reproductive Health
Eating well consistently is a habit, and it might take some time to make it stick. That’s why we put together some suggestions so you can prioritize your reproductive health at every step, from the grocery store to the plate:
A balanced diet is important for both men and women on their preconception journey, so meal prepping and cooking together is a great way to participate as a team. Small, sustainable changes are more effective than dramatic overhauls.
Read More: Understanding Men’s Role During Preconception
Eating well can serve you during preconception and every other adult life stage, so there’s no better time to start. When you’re focusing on reproductive nutrition, keep these three pillars in mind: the plate method, the importance of macronutrients, and the timing of your meals.
While eating foods with antioxidants is key to a balanced diet and overall wellness, dietary intake from foods alone may not be sufficient to promote male and female reproductive cells.7 That’s why a daily Kaneka Ubiquinol® supplement is a great addition to a balanced diet, as it promotes preconception health, offers cellular support, and pairs well with healthy habits.
This dietitian-reviewed guide is your simple starting point as you begin this journey. Start with one meal, experiment with templates, and talk to your specialized doctor in the reproductive space to tailor your nutritional needs to your future goals.
Read More: Wondering When to Start Taking Kaneka Ubiquinol®? Start Here
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1 Forsmark-Andrée P, Lee CP, Dallner G, Ernster L. Lipid peroxidation and changes in the ubiquinone content and the respiratory chain enzymes of submitochondrial particles. Free Radic Biol Med. 1997;22(3):391-400.
2 Martini FH. Muscle tissue. In: Fundamentals of Anatomy and Physiology, Prentice Hall, Inc, Upper Saddle River, New Jersey, 12th edition, pp. 82
3 Mihalas BP, Redgrove KA, McLaughlin EA, Nixon B. Molecular mechanisms responsible for increased vulnerability of the ageing oocyte to oxidative damage. Oxid Med Cell Longev. 2017;2017:4015874.
4 Bentov Y, Casper RF. The aging oocyte–can mitochondrial function be improved? Fertil Steril. 2013 Jan;99(1):18-22.
5 Pallotti F, Bergamini C, Lamperti C, Fato R. The roles of Coenzyme Q in disease: Direct and indirect involvement in cellular functions. Int J Mol Sci. 2021 Dec 23;23(1):128.
6 https://pmc.ncbi.nlm.nih.gov/articles/PMC11660991/
7 Tiseo BC, Gaskins AJ, Hauser R, Chavarro JE, Tanrikut C; EARTH Study Team. Coenzyme Q10 intake from food and semen parameters in a subfertile population. Urology. 2017 Apr;102:100-105.